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Environmental Pollution (Barking, Essex : 1987)|July 20, 2002
Defining the spatial impacts of poultry farm ammonia emissions on species composition of adjacent woodland groundflora using Ellenberg Nitrogen Index, nitrous oxide and nitric oxide emissions and foliar nitrogen as marker variablesC E R Pitcairn, U M Skiba, M A Sutton, et al.Environmental Pollution (Barking, Essex : 1987)|September 10, 2003
Bioindicators of enhanced nitrogen depositionC E R Pitcairn, D Fowler, I D Leith, et al.Pageof 1